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/*
* Copyright (c) 2012 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Copyright (c) 2004-2005 The Regents of The University of Michigan
* Copyright (c) 2013 Advanced Micro Devices, Inc.
* Copyright (c) 2013 Mark D. Hill and David A. Wood
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// This file will contain default statistics for the simulator that
// don't really belong to a specific simulator object
#include "sim/stat_control.hh"
#include <fstream>
#include <iostream>
#include <list>
#include "base/callback.hh"
#include "base/statistics.hh"
#include "base/time.hh"
#include "sim/global_event.hh"
namespace gem5
{
namespace statistics
{
GlobalEvent *dumpEvent;
void
initSimStats()
{
}
/**
* Event to dump and/or reset the statistics.
*/
class StatEvent : public GlobalEvent
{
private:
bool dump;
bool reset;
Tick repeat;
public:
StatEvent(Tick _when, bool _dump, bool _reset, Tick _repeat)
: GlobalEvent(_when, Stat_Event_Pri, 0),
dump(_dump), reset(_reset), repeat(_repeat)
{
}
virtual void
process()
{
if (dump)
statistics::dump();
if (reset)
statistics::reset();
if (repeat) {
statistics::schedStatEvent(dump, reset, curTick() + repeat,
repeat);
}
}
const char *description() const { return "GlobalStatEvent"; }
};
void
schedStatEvent(bool dump, bool reset, Tick when, Tick repeat)
{
// simQuantum is being added to the time when the stats would be
// dumped so as to ensure that this event happens only after the next
// sync amongst the event queues. Asingle event queue simulation
// should remain unaffected.
dumpEvent = new StatEvent(when + simQuantum, dump, reset, repeat);
}
void
periodicStatDump(Tick period)
{
/*
* If the period is set to 0, then we do not want to dump periodically,
* thus we deschedule the event. Else, if the period is not 0, but the
* event has already been scheduled, we need to get rid of the old event
* before we create a new one, as the old event will no longer be moved
* forward in the event that we resume from a checkpoint.
*/
if (dumpEvent != NULL && (period == 0 || dumpEvent->scheduled())) {
// Event should AutoDelete, so we do not need to free it.
dumpEvent->deschedule();
}
/*
* If the period is not 0, we schedule the event. If this is called with a
* period that is less than the current tick, then we shift the first dump
* by curTick. This ensures that we do not schedule the event is the past.
*/
if (period != 0) {
// Schedule the event
if (period >= curTick()) {
schedStatEvent(true, true, (Tick)period, (Tick)period);
} else {
schedStatEvent(true, true, (Tick)period + curTick(), (Tick)period);
}
}
}
void
updateEvents()
{
/*
* If the dumpEvent has been scheduled, but is scheduled in the past, then
* we need to shift the event to be at a valid point in time. Therefore, we
* shift the event by curTick.
*/
if (dumpEvent != NULL &&
(dumpEvent->scheduled() && dumpEvent->when() < curTick())) {
// shift by curTick() and reschedule
Tick _when = dumpEvent->when();
dumpEvent->reschedule(_when + curTick());
}
}
} // namespace statistics
} // namespace gem5